And I'm trying to get the 5th Piece of Ore and I've been whacking on the 'blinking red lobsters' for a while now (killed em 4 or 5 times) and I have yet to see anytihng at all happen and I'm wondeirtng How I get this piece of ore.

I'm not near the end I'm only just past the door that u use the dragonbone key for (found in the chest near the knights) And I'm wondering if you have to have finished the blighted blood area or do something specific to get this piece of ore?

For Dalles, stay away from the purple stuff on the floor and also those attacks that fly at you and look somewhat like a dragon since that induces heavy and is often followed by the purple stuff on the floor.